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Python lower

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The Python Lower is one of the built-in String function which is used to convert the given string into Lowercase letters and return new string.

In this article we will show you, How to convert a string to lowercase using lower Function in Python Programming with example.

TIP: The lower() Function will keep the Non-letters unchanged.

Python lower function syntax

The basic syntax of the lower function in Python Programming Language for lowercase string is as shown below:

String_Value.lower()

String_Value: Please select the valid String variable or you can use the String directly.

Python lower Example

The following set of examples will help you understand, how to convert a string to lowercase using the string lower in Python Programming Language.

# Python string lower() Method Example

Str1 = 'Learn PYTHON AT Tutorial GateWay'
Str2 = Str1.lower()
print('First Output of a Lower() method is = ', Str2)

# Observe the Original String
print('Converted String is = ', Str1.lower())
print('Original String is = ', Str1)

# Performing lower() function directly
Str3 = 'PYTHON ProGramming'.lower()
print('Second Output of a Lower() method is = ', Str3)

Str4 = 'PYTHON1234Tutorial'.lower()
print('Third Output of a Lower() method is = ', Str4)

Str5 = '12345'.lower()
print('Third Output of a Lower() method is = ', Str5)

OUTPUT

Python Lower

ANALYSIS

First we declared the String variable Str1 and assigned corresponding value using following statement

Str1 = 'Learn PYTHON AT Tutorial GateWay'

Following statement will convert the above string into lowercase using Lower() function and prints the output

Str2 = Str1.lower()
print('First Output of a Lower() method is = ', Str2)

The Python Lower() function will return the output in new string, instead of alter the original string. Following statements will show you the same

# Observe the Original String
print('Converted String is = ', Str1.lower())
print('Original String is = ', Str1)

From the above screenshot you can observe that, the original string Str1 is unchanged. If you want to change the original String, you can write the following statement

Str1 = Str1.lower()

The Python Lowercase function will only convert the letters into lowercase and leave other values unchanged. Within the following statements we used the numeric values along with letters and you can see the output for further reference

Str4 = 'PYTHON1234Tutorial'.lower()
print('Third Output of a Lower() method is = ', Str4)

Str5 = '12345'.lower()
print('Third Output of a Lower() method is = ', Str5)

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